Letter from Eric Keightley Rideal, on a paper 'The reaction between carbon monoxide and oxygen on cuprous oxide at room temperature' by William Edward Garner, F S Stone and P F Tiley, to D C Martin Paper reference code: A249 Rideal writes: 'My dear Martin, Many thanks for your letter of the 21st November concerning Garner's remarks on my observations. I do not feel the matter is completely settled, but, nevertheless, we are all entitled to our thoughts. With kind regards, Yours sincerely, Eric K Rideal'. Written at the University of London, King's College, Department of Physical Chemistry, Strand [England]. [Published in Proceedings A, 1952]. Endorsed on recto as received 24 November 1951. 22 November 1951